AU Converter

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Available translations: EN, DE, FR, IT, ES, PT, NL, PL, JP, KR, ZH

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Convert AU files online for free

With this online AU audio converter, you can easily change the format of your audio in a minute while preserving the sound quality – just transfer the files to the changer and start converting. If you want to have an application with a wider variety of features or you need to convert files of big size, try out the desktop version of this AU converter on Mac and Windows.

What is AU?

Full name

Au File Format

Format type

Audio

Developed by

Sun Microsystems

Description

What is AU? AU is short for “audio”, which means that this file type was created to store sound. It is not a very common format; it is primarily used on Unix systems, which are not widely themselves. Still, playback of AU files on Windows or Mac is also possible; several programs are able to open these audio files. Below, you’ll find information on how to play AUs.

File extension

.au

Technical details

The AU format specification has three main parts: a header, an annotation, and the main block that contains audio data. This data can be encoded by μ-law, PCM, or A-law algorithms. Aside from the programs listed below, you can also use Java apps to play AU files.

Associated programs

Windows Media Player, QuickTime, VLC, and others